YAMAHA 4-stroke, OHV (overhead valve), single cylinder, air-cooled engine. ... for better protection.Oil alert system with automatic engine shut-off.YAMAHA 4-stroke, OHV (overhead valve), single cylinder, air-cooled engine ... Weight(kg)8820ft Container Qty13640ft Container Qty280Warranty3 Years Limited Warranty YAMAHA engine 6kw gasoline generator set